![]() ![]() ![]() What's the difference between J2SDK 1.5 and J2SDK 5.0?.What is the preferred size of a component?.What's new with the stop(), suspend() and resume() methods in JDK 1.2?.What are three ways in which a thread can enter the waiting state?.What are synchronized methods and synchronized statements?.What is synchronization and why is it important?.Which containers use a border layout as their default layout?.What is the difference between Serializalble and Externalizable interface?.How many methods in the Externalizable interface?.How many methods in the Serializable interface?.If a class is located in a package, what do you need to change in the OS environment to be able to use it?.What is similarities/difference between an Abstract class and Interface?.Is Iterator a Class or Interface? What is its use?.What do you understand by Synchronization?.Name the containers which uses Border Layout as their default layout?.What's the difference between an interface and an abstract class?.How could Java classes direct program messages to the system console, but error messages, say to a file?.An application needs to load a library before it starts to run, how to code?.What is NullPointerException and how to handle it?.What is more advisable to create a thread, by implementing a Runnable interface or by extending Thread class?.He decided to make a clone of the map in order to save the original data on side. Jack developed a program by using a Map container to hold key/value pairs.Can you have virtual functions in Java?.What does a well-written OO program look like?.Multi-threading means various threads that run in a system. ![]() Java Interview Questions and Answers (part 1) ![]()
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